CA1288256C - Portable assembly for testing fluids - Google Patents
Portable assembly for testing fluidsInfo
- Publication number
- CA1288256C CA1288256C CA000523188A CA523188A CA1288256C CA 1288256 C CA1288256 C CA 1288256C CA 000523188 A CA000523188 A CA 000523188A CA 523188 A CA523188 A CA 523188A CA 1288256 C CA1288256 C CA 1288256C
- Authority
- CA
- Canada
- Prior art keywords
- conduit member
- fluid
- test conduit
- predetermined length
- test
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/008—Monitoring fouling
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental & Geological Engineering (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
There is disclosed a portable apparatus and process for using same including a test conduit assembly and related conduit valve and fluid flow assemblies for connecting to a process unit for fluid flow communication with the test conduit assembly for passing a fluid to be evaluated for corrosive effect on such test conduit assembly wherein the test conduit assembly includes a test conduit of a predetermined length disposed in a transparent conduit section for passing the fluid therethrough and wherein a heating unit of a predetermined length is disposed in the test conduit wherein the heating unit is of a length of at least about 2 inches and comprises less than about 50 percent of the predetermined length of the test conduit.
There is disclosed a portable apparatus and process for using same including a test conduit assembly and related conduit valve and fluid flow assemblies for connecting to a process unit for fluid flow communication with the test conduit assembly for passing a fluid to be evaluated for corrosive effect on such test conduit assembly wherein the test conduit assembly includes a test conduit of a predetermined length disposed in a transparent conduit section for passing the fluid therethrough and wherein a heating unit of a predetermined length is disposed in the test conduit wherein the heating unit is of a length of at least about 2 inches and comprises less than about 50 percent of the predetermined length of the test conduit.
Description
~ 2~3256 PORTABLE ASSEMBLY FOR TESTING FLUIDS
BACKGRO~ND OF_THE INVENTION
1) Field of the Invention This invention relates to a process and apparatus Eor testing fluids, and more particularly to an improved process and apparatus for testing the corrosion effects of a fluid to a metallic surface.
BACKGRO~ND OF_THE INVENTION
1) Field of the Invention This invention relates to a process and apparatus Eor testing fluids, and more particularly to an improved process and apparatus for testing the corrosion effects of a fluid to a metallic surface.
2) Description of the Prior Art The chemical water treatment industry has histori-cally been involved with reducing or inhibiting the inherentscale forming or fouling tendencies of natural waters associ-ated with large industrial coo]ing water systems. Many of the foulant components found in water systems originate with the incoming supply, but some contaminants enter the system from the local environment or from process contamination.
In U.S. Patent No. 4,339,945, assigned to the same assignee as the instant application, there is disclosed a novel mobile apparatus and process therefor including a heat transfer test assembly and related conduit and valve assemblies for connection in fluid flow communication to a heat transfer apparatus for in situ testing of the fluid passing therethrough and including monitoring and recording apparatus. The heat transfer test assembly includes a heating member for controlled heat input and thermocouples to measure the wall temperature of the heating member to permit fouling determinations at varying flow rates with simultaneous monitoring and recording thereof .
~k ' ~ ~88~S~;
to~ether with data, such as corrosion, pH, conductivit~, and the like. The mobile unit is difficult to conveniently move from one location to anotller and provides data with respect to the corrosion effect of a test fluid in a heat transfer environment. Additionally, the heating member includes a resistant heating element embedded therein and consequently such heating member is discarded after use.
In Canadian Patent 1,189,724 there is disclosed a fouling and corrosion test assembly comprised of a metallic tube having a heating element embedded in a heat conductive material for controlled heat input and with a thermocouple to measure wall temperature of the tube, and a metallic sleeve disposed about a predetermined portion of the metallic tube.
The fouling and corrosion test assembly is disposed within a conduit including valve assemblies to be placed for a predetermined time period in fluid flow communication with a fluid to determine corrosion rate, etc. by weight loss of the metallic sleeve under controlled heat input, temperature conditions and fluid flow rates. All such prior methods and apparatus related to corrosion and foulin~ as re7ated to heat transfer conditions. There exists a need to evaluate corrosion and fouling of a fluid to a surface in heat transfer and non-heat transfer relationships to provide corrosion and fouling data and thereby to provide for more effective design factors of heat transfer assemblies.
8~
~[JII~IARY oF THE, 1NVENTI(~N
T~e dis~dvan~ es o th~ prior ~rt are mi,ti~ate~ r.
obviated by the ~resent invention whi~h in one aspe~t pro~ldes a por~able apparatus ~n(l process for uslng same including a test conduit assembly a!ld related conduit valve and fluid flow assemblies for conne~tin~ to a proces~ unit for fluid flow communication with the test conduit assembly for passing a fluid to be evaluated for corrosive effect on suoh test conduit assembly wherein the test conduit assembly includes a test conduit of a predetermined length disposed in a transparent conduit section for passing the fluid therethrough and ~Jherein a heating unit of a predetermined length is disposed in the test conduit wherein the heating unit is of a length of at least about 2 inches and comprises less than about 50 percent of the predetermined ler.g~h of the test conduit.
In a further aspect, the invention provides a port-able assembly for testing a fluid for corrosiveness and fouling simultaneously of a heat transfer surface and non-heat transfer surface, which comprises: a housing; a conduit member disposed within said housing; a test condult me~er o~ a prede~ermined ~ength and weight disposed in said conduit member to provide a fluid flow passageway about said test conduit member, said test conduit member haviny an internal channel a heating member having a heat element and of a predetermined length disposed in said internal channel of said tes~ conduit member in close fitting relationship therewith, said predetermined length of said heating member being less than fifty percent of said predetermined length of said test conduit member thereby defining said heat transfer surface and said non-heat transfer surface of said test conduit member; a fluid inlet coupling and a fluid outlet coupling mounted to said housing; fluid inlet conduit means connected to said fluid inlet coupling for 8~
'1 '~ l q ~
passlna sa:id ~luid l.o sa:id flu:i(l f]o~l passage~ay; flui.d outlet conduit meclns for t~asslllq fluid from saicl fl~lid flo~ pass,î~e~
t.o said outlet coupling: means foL controlling the flo~ of fluid throuqh said fluid flow passageway; means for measu~ing fluid flo-~ throuqh said fluid passage~ay; and means for provid-ing power to said heating element of said heating member.
Another aspect of the invention provides a test conduit assembly for heating a fluid, which comprises: a conduit member a metallic ~est conduit member of a predeter-mined length and weight disposed within said condui~ memberdefining therebetween a fluid flow passageway, said test conduit member having a channel therethrough; a cylindrically-shaped heating cartridge of a predetermined length positioned in close fitting relationship within said channel of said metallic test Gonduit member, ~aid predetermined length of said heating cartridge being less than fifty percent of said pre-determined length of said metallic test conduit member thereby defining a heat transfer s~rface and a non-heat ~ransfer surface of said metallic test conduit assembly for evaluating simultaneous7y said fluid as to corrosive factors against said surfaces.
A further aspect of the invention provides a method for determining corrosiveness of a fluid, which comprises:
~eighing a metallic test conduit member of a predetermined length and having a channel therethrough; positioning a cylin-drically-shaped heating cartridge of a predetermined length in close fitting relationship within said channel of ~aid metallic test conduit member, said predetermined length of said cylin-drically-shaped cartridge ~eing iess than said predetermined length of said metallic test conduit member thereby defining a heat transfer surface and a non-heat transfer surface about said metallic test conduit member, positioning said metallic 4 4 5; ~
!.~ C'OlldUlt. Ill~ )el Wi~ olldult member the~ehy ~lf~f irlinq ;J
f~ low pclSS~t~*~ t~l*~e~:~etweerl; r)ass:ing sald flall(l thro~
s~lid fluid ~low passave~cl~ for a ~reselect time period; ener-gi~inq s~lcl heati~lg c~rt.rid~e durin~ said preselect time period recording rate of fluid flow and power to said heating cartri~ge; removin~ said metallic test conduit member from within said conduit member; removing said heating cartridge from said metallic test conduit member; dissectinq said metal-lic test conduit member in~o said heat transfer ,surface and 10 said non-heat transfer surface; and ~eighing said surface to provide data for evaluating with said fluid flow rate and po~7er input of corrosion of said fluid on said heat transfer surface and said non-heat transfer surface.
BRIEF DESCRIPTION OF THE DRAWINCS
Further advantages of the present invention will become apparent upon eonsideration of the detailed disclosure thereof, especially when taken with the accompanying drawings wherein like numerals designate like parts throughout and wherein:
Figure 1 is an elevational view of the portabie apparatus of the present invention; and ~ 2~8~S~i Fiyure 2 is an enlarged, somewhat schematic c~oss-sectional view of the test conduit assembly.
DE.TAILED DESCRIPTION OF THE DRAWINGS
Referring now to the drawings, and particularly to Figure 1, there is illustrated a corrosion test assembly, generally indicated as 10, comprised o~ a houslng 12 in which is disposed a test unit, generally indicated as 14, and related conduit and fluid flow control, generally indicated as 16.
The test unit 14, referring more specifically to Figure 2, is comprised of a test conduit assembly, generally indicated as 18, coaxially disposed within a conduit 20 forming an annular passageway 22. The test conduit assembly 18 is comprised of a predetermined length of a test conduit member 24 in which is disposed a cylindrically-shaped cartridge member 26 including a high resistant heating element 28 including conductors 30 embedded within an insulating matrix 32, such as magnesium oxide. The cartridge member 26 is formed to provide for close fitting contact within the test conduit member 24 to ensure good heat transfer across the contacting surfaces as well as to prevent overheating and burn-out of the cartridge member 26, i.e. the outer diameter of the cartridge member 26 is slightly smaller than the inner diameter of the test conduit member 24 to ~ermit facile assembly of the former within the latter.
The test conduit member 24 is formed of a metallic material, such as stainless steel, copper, titanium, mild steel, admiralty metal or the like, dependent, for example, on the tube 8'~5~
¦ material of a heat exchanger being evaluated or to be designed ¦ for the fluid to be tested by passage through the test unit 14, ¦ or of like metallic material to that ln the unit through which ¦ the fluid to be tested i~ flowing. Generally, mild steel or S ¦ stainle~s ~teel i9 used for normal cooling water application, whereas admiralty b~a~s is employed for ~ea water and brackish water application~. The conduit 20 is preferably formed of any suitable t~ansparent material, ~uch as glass, to pe~mit visual observatlon of fluid flow as well as any scale formation about ~0 the ~urface of the test conduit membe~ 24.
The cart~ld9ë member 26 is of à length ~ufficient to provlde a steady state of heat tr~nsfer at any desired energy level, however, 19 lesB than about flfty petcent (50~) of the length of the test conduit member 24. In such dimen~ional relation~hip, the cor~oslo~ and fouling effect of the fluid on the te~t cond~it member 24 may be mea~ured with respect to a heat transfer and a non-heat tranYfer relationship, as more fully hereinafter discus~ed.
The test conduit a~embly 14 is disposed within the conduit and fluid flow con~rol 16 within the housing 12.
Referring again to ~IGURE 1, the conduit and fluid flow control 16 incl~des inlet and outlet couplihgs 40 and 42 for connection to a process ~n~t ~not ~howh)~ The coupling~ 40 and 42 are connected in flu~d flo~ telat;o~sh~p to the test condu;t member 2S 24 ~y an ~nlet condult assembly and an o~tlet conduit assembly, generally ;ndic~tèd as 44 and 46, ~espectively. The inlet conduit as~embly 44 ~ncludes a shut off valve 48. The outlet condu~t assembly 46 include~ a fluid flow measurlng device 50 and a valve 52 for controll~ng the rate of fluld flow through the test cond~it assembly 14. The flu;d flow measur;ng device may al~o function as a low flow cut-off. The conduit 20 permits visual observation of corrosion, fouling and scale build-up about the test condu;t member 24. ~he portable test asaembly 10 is provided w;th a power cohtroller device 54 having voltage settihgs from 0 to 220 VA~ includ;ng cohductors 56 for connection to the cohductors 3~ of the heating element of the heat;ng cattridge 26.
In operation, a te~t conduit 24 of a predetermined length and preselec~ metall~rgy is cléaned and we;ghed. The heating cartr;dge 26 is inserted into the test conduit 24, and i~
preferàbly coated with a heat transfer paste to a~sist in close fitting of the heating cartridge 26 therein as well as to as~ist in the heat transfer relationship. The te~t conduit assembly 18 is then inserted within the conduit 20 and coupled to the inlet and outlet conduit assemblies q4 and 46. Thereafter, a conduit ~not shown) from a ptocess unit (not shown) containing a fluid to be testea is connected to the lnlet coupling 40 and a conduit (not shown) i~ co~pled to the outlet coupling 42 for return to the process un~ t. ~luid flow through the test assembly 10 i~
controlled by ~alve $2 wherea~ power to the heating cartridge 26 i~ controlled by adj~sting the po~er controller 54 at diverse power inputs. It i9 understood that a p~mp or other means may . .
-- 7 -- ' ~ 1~88;~56 be prov~ded to assist in effecting fluid flow through the asRembly 10 including fluid flow about the te~t conduit member 24 during test protocol during which flow data, power data, etc.
are recorded and vlsual inspection periodically made and data recorded of the test conduit member 24.
After a predetermined time, the test protocol i8 discontinued and the test conduit member 24 is removed from the test condu~t assembly. Thé test conduit member 24 is cleaned w~th the deposits analy~ed. Thereafter, the test conduit member 24 ;s severed into a part constituting the heat transfer portion and patts constitut~ng the non~heat transfer portlons, and unexposed pa~ts wlth thè parts mea3~tedj weighed and compa~ed to o~ig;nal weight to pro~ide results as to corrosion, fouling, étc. as selected to heat and noh-heat transfer surfaces as correlated agaih~t rates o~ fluld flow and power input.
While the pre~ent inventlon has been described in conhect;on with an exemplary embod~ment theteof, it w~ll be under~tood that ~any ~odifications w~ll be apparent to those of ordinary skill in the a~t: and that this àppllcation is intended to cover any adaptat;ons or var~at;ons thereof. Therefore, it ;s man;fe~tly ~ntended that th~ invention be only limited ~y the claims and the equivalent~ thereof.
- n -
In U.S. Patent No. 4,339,945, assigned to the same assignee as the instant application, there is disclosed a novel mobile apparatus and process therefor including a heat transfer test assembly and related conduit and valve assemblies for connection in fluid flow communication to a heat transfer apparatus for in situ testing of the fluid passing therethrough and including monitoring and recording apparatus. The heat transfer test assembly includes a heating member for controlled heat input and thermocouples to measure the wall temperature of the heating member to permit fouling determinations at varying flow rates with simultaneous monitoring and recording thereof .
~k ' ~ ~88~S~;
to~ether with data, such as corrosion, pH, conductivit~, and the like. The mobile unit is difficult to conveniently move from one location to anotller and provides data with respect to the corrosion effect of a test fluid in a heat transfer environment. Additionally, the heating member includes a resistant heating element embedded therein and consequently such heating member is discarded after use.
In Canadian Patent 1,189,724 there is disclosed a fouling and corrosion test assembly comprised of a metallic tube having a heating element embedded in a heat conductive material for controlled heat input and with a thermocouple to measure wall temperature of the tube, and a metallic sleeve disposed about a predetermined portion of the metallic tube.
The fouling and corrosion test assembly is disposed within a conduit including valve assemblies to be placed for a predetermined time period in fluid flow communication with a fluid to determine corrosion rate, etc. by weight loss of the metallic sleeve under controlled heat input, temperature conditions and fluid flow rates. All such prior methods and apparatus related to corrosion and foulin~ as re7ated to heat transfer conditions. There exists a need to evaluate corrosion and fouling of a fluid to a surface in heat transfer and non-heat transfer relationships to provide corrosion and fouling data and thereby to provide for more effective design factors of heat transfer assemblies.
8~
~[JII~IARY oF THE, 1NVENTI(~N
T~e dis~dvan~ es o th~ prior ~rt are mi,ti~ate~ r.
obviated by the ~resent invention whi~h in one aspe~t pro~ldes a por~able apparatus ~n(l process for uslng same including a test conduit assembly a!ld related conduit valve and fluid flow assemblies for conne~tin~ to a proces~ unit for fluid flow communication with the test conduit assembly for passing a fluid to be evaluated for corrosive effect on suoh test conduit assembly wherein the test conduit assembly includes a test conduit of a predetermined length disposed in a transparent conduit section for passing the fluid therethrough and ~Jherein a heating unit of a predetermined length is disposed in the test conduit wherein the heating unit is of a length of at least about 2 inches and comprises less than about 50 percent of the predetermined ler.g~h of the test conduit.
In a further aspect, the invention provides a port-able assembly for testing a fluid for corrosiveness and fouling simultaneously of a heat transfer surface and non-heat transfer surface, which comprises: a housing; a conduit member disposed within said housing; a test condult me~er o~ a prede~ermined ~ength and weight disposed in said conduit member to provide a fluid flow passageway about said test conduit member, said test conduit member haviny an internal channel a heating member having a heat element and of a predetermined length disposed in said internal channel of said tes~ conduit member in close fitting relationship therewith, said predetermined length of said heating member being less than fifty percent of said predetermined length of said test conduit member thereby defining said heat transfer surface and said non-heat transfer surface of said test conduit member; a fluid inlet coupling and a fluid outlet coupling mounted to said housing; fluid inlet conduit means connected to said fluid inlet coupling for 8~
'1 '~ l q ~
passlna sa:id ~luid l.o sa:id flu:i(l f]o~l passage~ay; flui.d outlet conduit meclns for t~asslllq fluid from saicl fl~lid flo~ pass,î~e~
t.o said outlet coupling: means foL controlling the flo~ of fluid throuqh said fluid flow passageway; means for measu~ing fluid flo-~ throuqh said fluid passage~ay; and means for provid-ing power to said heating element of said heating member.
Another aspect of the invention provides a test conduit assembly for heating a fluid, which comprises: a conduit member a metallic ~est conduit member of a predeter-mined length and weight disposed within said condui~ memberdefining therebetween a fluid flow passageway, said test conduit member having a channel therethrough; a cylindrically-shaped heating cartridge of a predetermined length positioned in close fitting relationship within said channel of said metallic test Gonduit member, ~aid predetermined length of said heating cartridge being less than fifty percent of said pre-determined length of said metallic test conduit member thereby defining a heat transfer s~rface and a non-heat ~ransfer surface of said metallic test conduit assembly for evaluating simultaneous7y said fluid as to corrosive factors against said surfaces.
A further aspect of the invention provides a method for determining corrosiveness of a fluid, which comprises:
~eighing a metallic test conduit member of a predetermined length and having a channel therethrough; positioning a cylin-drically-shaped heating cartridge of a predetermined length in close fitting relationship within said channel of ~aid metallic test conduit member, said predetermined length of said cylin-drically-shaped cartridge ~eing iess than said predetermined length of said metallic test conduit member thereby defining a heat transfer surface and a non-heat transfer surface about said metallic test conduit member, positioning said metallic 4 4 5; ~
!.~ C'OlldUlt. Ill~ )el Wi~ olldult member the~ehy ~lf~f irlinq ;J
f~ low pclSS~t~*~ t~l*~e~:~etweerl; r)ass:ing sald flall(l thro~
s~lid fluid ~low passave~cl~ for a ~reselect time period; ener-gi~inq s~lcl heati~lg c~rt.rid~e durin~ said preselect time period recording rate of fluid flow and power to said heating cartri~ge; removin~ said metallic test conduit member from within said conduit member; removing said heating cartridge from said metallic test conduit member; dissectinq said metal-lic test conduit member in~o said heat transfer ,surface and 10 said non-heat transfer surface; and ~eighing said surface to provide data for evaluating with said fluid flow rate and po~7er input of corrosion of said fluid on said heat transfer surface and said non-heat transfer surface.
BRIEF DESCRIPTION OF THE DRAWINCS
Further advantages of the present invention will become apparent upon eonsideration of the detailed disclosure thereof, especially when taken with the accompanying drawings wherein like numerals designate like parts throughout and wherein:
Figure 1 is an elevational view of the portabie apparatus of the present invention; and ~ 2~8~S~i Fiyure 2 is an enlarged, somewhat schematic c~oss-sectional view of the test conduit assembly.
DE.TAILED DESCRIPTION OF THE DRAWINGS
Referring now to the drawings, and particularly to Figure 1, there is illustrated a corrosion test assembly, generally indicated as 10, comprised o~ a houslng 12 in which is disposed a test unit, generally indicated as 14, and related conduit and fluid flow control, generally indicated as 16.
The test unit 14, referring more specifically to Figure 2, is comprised of a test conduit assembly, generally indicated as 18, coaxially disposed within a conduit 20 forming an annular passageway 22. The test conduit assembly 18 is comprised of a predetermined length of a test conduit member 24 in which is disposed a cylindrically-shaped cartridge member 26 including a high resistant heating element 28 including conductors 30 embedded within an insulating matrix 32, such as magnesium oxide. The cartridge member 26 is formed to provide for close fitting contact within the test conduit member 24 to ensure good heat transfer across the contacting surfaces as well as to prevent overheating and burn-out of the cartridge member 26, i.e. the outer diameter of the cartridge member 26 is slightly smaller than the inner diameter of the test conduit member 24 to ~ermit facile assembly of the former within the latter.
The test conduit member 24 is formed of a metallic material, such as stainless steel, copper, titanium, mild steel, admiralty metal or the like, dependent, for example, on the tube 8'~5~
¦ material of a heat exchanger being evaluated or to be designed ¦ for the fluid to be tested by passage through the test unit 14, ¦ or of like metallic material to that ln the unit through which ¦ the fluid to be tested i~ flowing. Generally, mild steel or S ¦ stainle~s ~teel i9 used for normal cooling water application, whereas admiralty b~a~s is employed for ~ea water and brackish water application~. The conduit 20 is preferably formed of any suitable t~ansparent material, ~uch as glass, to pe~mit visual observatlon of fluid flow as well as any scale formation about ~0 the ~urface of the test conduit membe~ 24.
The cart~ld9ë member 26 is of à length ~ufficient to provlde a steady state of heat tr~nsfer at any desired energy level, however, 19 lesB than about flfty petcent (50~) of the length of the test conduit member 24. In such dimen~ional relation~hip, the cor~oslo~ and fouling effect of the fluid on the te~t cond~it member 24 may be mea~ured with respect to a heat transfer and a non-heat tranYfer relationship, as more fully hereinafter discus~ed.
The test conduit a~embly 14 is disposed within the conduit and fluid flow con~rol 16 within the housing 12.
Referring again to ~IGURE 1, the conduit and fluid flow control 16 incl~des inlet and outlet couplihgs 40 and 42 for connection to a process ~n~t ~not ~howh)~ The coupling~ 40 and 42 are connected in flu~d flo~ telat;o~sh~p to the test condu;t member 2S 24 ~y an ~nlet condult assembly and an o~tlet conduit assembly, generally ;ndic~tèd as 44 and 46, ~espectively. The inlet conduit as~embly 44 ~ncludes a shut off valve 48. The outlet condu~t assembly 46 include~ a fluid flow measurlng device 50 and a valve 52 for controll~ng the rate of fluld flow through the test cond~it assembly 14. The flu;d flow measur;ng device may al~o function as a low flow cut-off. The conduit 20 permits visual observation of corrosion, fouling and scale build-up about the test condu;t member 24. ~he portable test asaembly 10 is provided w;th a power cohtroller device 54 having voltage settihgs from 0 to 220 VA~ includ;ng cohductors 56 for connection to the cohductors 3~ of the heating element of the heat;ng cattridge 26.
In operation, a te~t conduit 24 of a predetermined length and preselec~ metall~rgy is cléaned and we;ghed. The heating cartr;dge 26 is inserted into the test conduit 24, and i~
preferàbly coated with a heat transfer paste to a~sist in close fitting of the heating cartridge 26 therein as well as to as~ist in the heat transfer relationship. The te~t conduit assembly 18 is then inserted within the conduit 20 and coupled to the inlet and outlet conduit assemblies q4 and 46. Thereafter, a conduit ~not shown) from a ptocess unit (not shown) containing a fluid to be testea is connected to the lnlet coupling 40 and a conduit (not shown) i~ co~pled to the outlet coupling 42 for return to the process un~ t. ~luid flow through the test assembly 10 i~
controlled by ~alve $2 wherea~ power to the heating cartridge 26 i~ controlled by adj~sting the po~er controller 54 at diverse power inputs. It i9 understood that a p~mp or other means may . .
-- 7 -- ' ~ 1~88;~56 be prov~ded to assist in effecting fluid flow through the asRembly 10 including fluid flow about the te~t conduit member 24 during test protocol during which flow data, power data, etc.
are recorded and vlsual inspection periodically made and data recorded of the test conduit member 24.
After a predetermined time, the test protocol i8 discontinued and the test conduit member 24 is removed from the test condu~t assembly. Thé test conduit member 24 is cleaned w~th the deposits analy~ed. Thereafter, the test conduit member 24 ;s severed into a part constituting the heat transfer portion and patts constitut~ng the non~heat transfer portlons, and unexposed pa~ts wlth thè parts mea3~tedj weighed and compa~ed to o~ig;nal weight to pro~ide results as to corrosion, fouling, étc. as selected to heat and noh-heat transfer surfaces as correlated agaih~t rates o~ fluld flow and power input.
While the pre~ent inventlon has been described in conhect;on with an exemplary embod~ment theteof, it w~ll be under~tood that ~any ~odifications w~ll be apparent to those of ordinary skill in the a~t: and that this àppllcation is intended to cover any adaptat;ons or var~at;ons thereof. Therefore, it ;s man;fe~tly ~ntended that th~ invention be only limited ~y the claims and the equivalent~ thereof.
- n -
Claims (14)
1. A portable assembly for testing a fluid for corrosiveness and fouling simultaneously of a heat transfer surface and a non-heat transfer surface, which comprises:
a housing;
a conduit member disposed within said housing;
a test conduit member of a predetermined length and weight disposed in said conduit member to provide a fluid flow passageway about said test conduit member, said test conduit member having an internal channel;
a heating member having a heat element and of a predetermined length disposed in said internal channel of said test conduit member in close fitting relationship therewith, said predetermined length of said heating member being less than fifty percent of said predetermined length of said test conduit member thereby defining said heat transfer surface and said non-heat transfer surface of said test conduit member;
a fluid inlet coupling and a fluid outlet coupling mounted to said housing;
fluid inlet conduit means connected to said fluid inlet coupling for passing said fluid to said fluid flow passageway;
fluid outlet conduit means for passing fluid from said fluid flow passageway to said outlet coupling;
means for controlling the flow of fluid through said fluid flow passageway;
means for measuring fluid flow through said fluid passageway; and means for providing power to said heating element of said heating member.
a housing;
a conduit member disposed within said housing;
a test conduit member of a predetermined length and weight disposed in said conduit member to provide a fluid flow passageway about said test conduit member, said test conduit member having an internal channel;
a heating member having a heat element and of a predetermined length disposed in said internal channel of said test conduit member in close fitting relationship therewith, said predetermined length of said heating member being less than fifty percent of said predetermined length of said test conduit member thereby defining said heat transfer surface and said non-heat transfer surface of said test conduit member;
a fluid inlet coupling and a fluid outlet coupling mounted to said housing;
fluid inlet conduit means connected to said fluid inlet coupling for passing said fluid to said fluid flow passageway;
fluid outlet conduit means for passing fluid from said fluid flow passageway to said outlet coupling;
means for controlling the flow of fluid through said fluid flow passageway;
means for measuring fluid flow through said fluid passageway; and means for providing power to said heating element of said heating member.
2 . The portable assembly as defined in claim 1 wherein the conduit member is formed of a transparent material.
3. The portable assembly as defined in claim 2 wherein said transparent material is glass.
4. The portable assembly as defined in claim 1 wherein said conduit members are tubular.
5. The portable assembly as defined in claim 4 wherein said test conduit member is coaxially aligned with said conduit member.
6. The portable assembly as defined in claim 5 wherein said heating member is longitudinally centered within said internal channel.
7. The portable assembly as defined in claim 1 wherein said heating member is a predetermined length of at least two inches.
8. The portable assembly as defined in claim 4 wherein said fluid flow passageway is annularly-shaped.
9. A test conduit assembly for heating a fluid, which comprises:
a conduit member;
a metallic test conduit member of a predetermined length and weight disposed within said conduit member defining therebetween a fluid flow passageway, said test conduit member having a channel therethrough;
a cylindrically-shaped heating cartridge of a predetermined length positioned in close fitting relationship within said channel of said metallic test conduit member, said predetermined length of said heating cartridge being less than fifty percent of said predetermined length of said metallic test conduit member thereby defining a heat transfer surface and a non-heat transfer surface of said metallic test conduit assembly for evaluating simultaneously said fluid as to corrosive factors against said surfaces.
a conduit member;
a metallic test conduit member of a predetermined length and weight disposed within said conduit member defining therebetween a fluid flow passageway, said test conduit member having a channel therethrough;
a cylindrically-shaped heating cartridge of a predetermined length positioned in close fitting relationship within said channel of said metallic test conduit member, said predetermined length of said heating cartridge being less than fifty percent of said predetermined length of said metallic test conduit member thereby defining a heat transfer surface and a non-heat transfer surface of said metallic test conduit assembly for evaluating simultaneously said fluid as to corrosive factors against said surfaces.
10. The test conduit assembly as defined in claim 9 wherein said metallic test conduit member is coaxially aligned within said conduit member.
11. The test conduit assembly as defined in claim 10 wherein said conduit member is transparent.
12. The test conduit assembly as defined in claim 10 wherein said heating cartridge is of a predetermined length of at least two inches.
13. The test conduit assembly as defined in claim 1 wherein said heating cartridge is positioned within said internal channel of said test conduit member at a midpoint thereof.
14. A method for determining corrosiveness of a fluid, which comprises:
weighing a metallic test conduit member of a predetermined length and having a channel therethrough positioning a cylindrically-shaped heating cartridge of a predetermined length in close fitting relationship within said channel of said metallic test conduit member, said predetermined length of said cylindrically-shaped cartridge being less than said predetermined length of said metallic test conduit member thereby defining a heat transfer surface and a non-heat transfer surface about said metallic test conduit member;
positioning said metallic test conduit member within a conduit member thereby defining a fluid flow passageway therebetween;
passing said fluid through said fluid flow passageway for a preselect time period;
energizing said heating cartridge during said preselect time period;
recording rate of fluid flow and power to said heating cartridge;
removing said metallic test conduit member from within said conduit member;
removing said heating cartridge from said metallic test conduit member;
dissecting said metallic test conduit member into said heat transfer surface and said non-heat transfer surface; and weighing said surface to provide data for evaluating with said fluid flow rate and power input of corrosion of said fluid on said heat transfer surface and said non-heat transfer surface.
weighing a metallic test conduit member of a predetermined length and having a channel therethrough positioning a cylindrically-shaped heating cartridge of a predetermined length in close fitting relationship within said channel of said metallic test conduit member, said predetermined length of said cylindrically-shaped cartridge being less than said predetermined length of said metallic test conduit member thereby defining a heat transfer surface and a non-heat transfer surface about said metallic test conduit member;
positioning said metallic test conduit member within a conduit member thereby defining a fluid flow passageway therebetween;
passing said fluid through said fluid flow passageway for a preselect time period;
energizing said heating cartridge during said preselect time period;
recording rate of fluid flow and power to said heating cartridge;
removing said metallic test conduit member from within said conduit member;
removing said heating cartridge from said metallic test conduit member;
dissecting said metallic test conduit member into said heat transfer surface and said non-heat transfer surface; and weighing said surface to provide data for evaluating with said fluid flow rate and power input of corrosion of said fluid on said heat transfer surface and said non-heat transfer surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US81372785A | 1985-12-27 | 1985-12-27 | |
| US06/813,727 | 1985-12-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1288256C true CA1288256C (en) | 1991-09-03 |
Family
ID=25213209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000523188A Expired - Lifetime CA1288256C (en) | 1985-12-27 | 1986-11-18 | Portable assembly for testing fluids |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0226856A3 (en) |
| CA (1) | CA1288256C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU604999B2 (en) * | 1987-12-24 | 1991-01-03 | Nalco Australia Pty. Limited | Measuring corrosivity |
| DE8900218U1 (en) * | 1989-01-10 | 1989-03-30 | San Sanierungstechnik GmbH, 8856 Harburg | Device for determining the essential parameters for the purification of contaminated water by means of air |
| US6311546B1 (en) | 1998-12-11 | 2001-11-06 | Buckman Laboratories International, Inc. | Biofouling monitor and methods to monitor or detect biofouling |
| US20070081573A1 (en) * | 2005-03-31 | 2007-04-12 | Ashland Licensing And Intellectual Property Llc | Process for inhibiting biofilm formation on and/or removing biofilm from an enhanced tube |
| DE202006009126U1 (en) * | 2006-06-10 | 2006-10-12 | Exner, Martin, Prof. Dr. | Biomonitor to check the efficacy of a drinking water disinfecting process is a silicon hose bearing a biofilm up to four years old |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3141324A (en) * | 1960-07-19 | 1964-07-21 | Nalco Chemical Co | Cooling water test unit |
| US4339945A (en) * | 1980-10-30 | 1982-07-20 | Drew Chemical Corporation | Process and apparatus for testing fluids for fouling |
| US4346587A (en) * | 1980-10-30 | 1982-08-31 | Drew Chemical Corporation | Process and apparatus for testing fluids for fouling and antifoulant protocol |
| US4686854A (en) * | 1981-06-18 | 1987-08-18 | Drew Chemical Corporation | Process and apparatus for measuring corrosion rate of a heat transfer surface |
-
1986
- 1986-11-18 CA CA000523188A patent/CA1288256C/en not_active Expired - Lifetime
- 1986-11-26 EP EP86116403A patent/EP0226856A3/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| EP0226856A3 (en) | 1988-09-07 |
| EP0226856A2 (en) | 1987-07-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4686854A (en) | Process and apparatus for measuring corrosion rate of a heat transfer surface | |
| US5948971A (en) | Corrosion monitoring system | |
| US5399017A (en) | Method and apparatus for evaluating heat exchanger efficiency | |
| US4339945A (en) | Process and apparatus for testing fluids for fouling | |
| EP0224271B1 (en) | Condenser having apparatus for monitoring conditions of inner surface of condenser tubes | |
| US5068196A (en) | Method for determining fluid corrosiveness | |
| US5363874A (en) | Automated sample conditioning module | |
| GB1581257A (en) | Method and apparatus for use in detecting and measuring the deposition of scale | |
| US3627493A (en) | Controlled temperature corrosion testing probe | |
| US3141324A (en) | Cooling water test unit | |
| US6062069A (en) | High temperature fouling test unit | |
| JPH04213066A (en) | Flowing-state sensor for detecting flowing state in pipe | |
| CA1288256C (en) | Portable assembly for testing fluids | |
| US4346587A (en) | Process and apparatus for testing fluids for fouling and antifoulant protocol | |
| Characklis | Biofouling: effects and control | |
| CA1173159A (en) | Process and apparatus for testing fluids for fouling and antifoulant protocol | |
| USRE33346E (en) | Process and apparatus for testing fluids for fouling | |
| US5361284A (en) | Tube corrosion accelerator | |
| USRE33468E (en) | Process and apparatus for testing fluids for fouling and antifoulant protocol | |
| US11378512B2 (en) | Corrosion process simulator | |
| US3155933A (en) | Probe for insertion in condenser tubes or the like | |
| EP1114311A1 (en) | Monitoring the heat transfer properties of a heat transferring surface | |
| EP0573530A1 (en) | Fouling probe | |
| Powell | Internal Corrosion Monitoring Using Coupons and Er Probes A Practical Focus on the Most Commonly Used, Cost‐Effective Monitoring Techniques | |
| Kuru et al. | High-temperature organic-fluid fouling unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |